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Related Concept Videos

Focusing of Light in the Eye01:16

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...

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Subjective Refraction Test Using a Smartphone for Vision Screening
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Prevalence of refractive errors in Möbius sequence.

Monica Fialho Cronemberger, Mariza Polati, Iara Debert

    Arquivos Brasileiros De Oftalmologia
    |September 25, 2013
    PubMed
    Summary
    This summary is machine-generated.

    Refractive errors are common in Möbius sequence, with 42.4% of patients exhibiting them. Astigmatism was found in 40% of eyes, highlighting the need for ophthalmological assessment in these patients.

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    Area of Science:

    • Ophthalmology
    • Genetics
    • Neurology

    Background:

    • Möbius sequence is a rare congenital disorder.
    • Ocular manifestations are frequently reported in Möbius sequence.
    • Comprehensive assessment is crucial for understanding the full spectrum of the condition.

    Purpose of the Study:

    • To determine the prevalence of refractive errors in individuals with Möbius sequence.
    • To characterize the types of refractive errors present.
    • To inform ophthalmological screening protocols for this population.

    Main Methods:

    • A cohort of 44 patients diagnosed with Möbius sequence underwent ophthalmological, neurological, genetic, psychiatric, psychological, and dental assessments.
    • Visual acuity, ocular motility, cycloplegic refraction, and fundus examinations were performed.
    • Data analysis focused on refractive error prevalence using spherical equivalent.

    Main Results:

    • Refractive errors were identified in 42.4% of the studied eyes.
    • Emmetropia was observed in 57.6% of eyes.
    • A significant prevalence of astigmatism (≥0.75 D) was noted in 40% of eyes.

    Conclusions:

    • Refractive errors represent a substantial health concern in patients with Möbius sequence.
    • The high prevalence of astigmatism underscores the importance of regular eye examinations.
    • Early detection and management of refractive errors can improve visual outcomes in this population.